include/asm-mips/cpu-features.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2003, 2004 Ralf Baechle
   7  * Copyright (C) 2004  Maciej W. Rozycki
   8  */
   9 #ifndef __ASM_CPU_FEATURES_H
  10 #define __ASM_CPU_FEATURES_H
  11
  12 #include <linux/config.h>
  13
  14 #include <asm/cpu.h>
  15 #include <asm/cpu-info.h>
  16 #include <cpu-feature-overrides.h>
  17
  18 /*
  19  * SMP assumption: Options of CPU 0 are a superset of all processors.
  20  * This is true for all known MIPS systems.
  21  */
  22 #ifndef cpu_has_tlb
  23 #define cpu_has_tlb             (cpu_data[0].options & MIPS_CPU_TLB)
  24 #endif
  25 #ifndef cpu_has_4kex
  26 #define cpu_has_4kex            (cpu_data[0].options & MIPS_CPU_4KEX)
  27 #endif
  28 #ifndef cpu_has_3k_cache
  29 #define cpu_has_3k_cache        (cpu_data[0].options & MIPS_CPU_3K_CACHE)
  30 #endif
  31 #define cpu_has_6k_cache        0
  32 #define cpu_has_8k_cache        0
  33 #ifndef cpu_has_4k_cache
  34 #define cpu_has_4k_cache        (cpu_data[0].options & MIPS_CPU_4K_CACHE)
  35 #endif
  36 #ifndef cpu_has_tx39_cache
  37 #define cpu_has_tx39_cache      (cpu_data[0].options & MIPS_CPU_TX39_CACHE)
  38 #endif
  39 #ifndef cpu_has_sb1_cache
  40 #define cpu_has_sb1_cache       (cpu_data[0].options & MIPS_CPU_SB1_CACHE)
  41 #endif
  42 #ifndef cpu_has_fpu
  43 #define cpu_has_fpu             (cpu_data[0].options & MIPS_CPU_FPU)
  44 #endif
  45 #ifndef cpu_has_32fpr
  46 #define cpu_has_32fpr           (cpu_data[0].options & MIPS_CPU_32FPR)
  47 #endif
  48 #ifndef cpu_has_counter
  49 #define cpu_has_counter         (cpu_data[0].options & MIPS_CPU_COUNTER)
  50 #endif
  51 #ifndef cpu_has_watch
  52 #define cpu_has_watch           (cpu_data[0].options & MIPS_CPU_WATCH)
  53 #endif
  54 #ifndef cpu_has_divec
  55 #define cpu_has_divec           (cpu_data[0].options & MIPS_CPU_DIVEC)
  56 #endif
  57 #ifndef cpu_has_vce
  58 #define cpu_has_vce             (cpu_data[0].options & MIPS_CPU_VCE)
  59 #endif
  60 #ifndef cpu_has_cache_cdex_p
  61 #define cpu_has_cache_cdex_p    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_P)
  62 #endif
  63 #ifndef cpu_has_cache_cdex_s
  64 #define cpu_has_cache_cdex_s    (cpu_data[0].options & MIPS_CPU_CACHE_CDEX_S)
  65 #endif
  66 #ifndef cpu_has_prefetch
  67 #define cpu_has_prefetch        (cpu_data[0].options & MIPS_CPU_PREFETCH)
  68 #endif
  69 #ifndef cpu_has_mcheck
  70 #define cpu_has_mcheck          (cpu_data[0].options & MIPS_CPU_MCHECK)
  71 #endif
  72 #ifndef cpu_has_ejtag
  73 #define cpu_has_ejtag           (cpu_data[0].options & MIPS_CPU_EJTAG)
  74 #endif
  75 #ifndef cpu_has_llsc
  76 #define cpu_has_llsc            (cpu_data[0].options & MIPS_CPU_LLSC)
  77 #endif
  78 #ifndef cpu_has_mips16
  79 #define cpu_has_mips16          (cpu_data[0].ases & MIPS_ASE_MIPS16)
  80 #endif
  81 #ifndef cpu_has_mdmx
  82 #define cpu_has_mdmx           (cpu_data[0].ases & MIPS_ASE_MDMX)
  83 #endif
  84 #ifndef cpu_has_mips3d
  85 #define cpu_has_mips3d         (cpu_data[0].ases & MIPS_ASE_MIPS3D)
  86 #endif
  87 #ifndef cpu_has_smartmips
  88 #define cpu_has_smartmips      (cpu_data[0].ases & MIPS_ASE_SMARTMIPS)
  89 #endif
  90 #ifndef cpu_has_vtag_icache
  91 #define cpu_has_vtag_icache     (cpu_data[0].icache.flags & MIPS_CACHE_VTAG)
  92 #endif
  93 #ifndef cpu_has_dc_aliases
  94 #define cpu_has_dc_aliases      (cpu_data[0].dcache.flags & MIPS_CACHE_ALIASES)
  95 #endif
  96 #ifndef cpu_has_ic_fills_f_dc
  97 #define cpu_has_ic_fills_f_dc   (cpu_data[0].icache.flags & MIPS_CACHE_IC_F_DC)
  98 #endif
  99
 100 /*
 101  * I-Cache snoops remote store.  This only matters on SMP.  Some multiprocessors
 102  * such as the R10000 have I-Caches that snoop local stores; the embedded ones
 103  * don't.  For maintaining I-cache coherency this means we need to flush the
 104  * D-cache all the way back to whever the I-cache does refills from, so the
 105  * I-cache has a chance to see the new data at all.  Then we have to flush the
 106  * I-cache also.
 107  * Note we may have been rescheduled and may no longer be running on the CPU
 108  * that did the store so we can't optimize this into only doing the flush on
 109  * the local CPU.
 110  */
 111 #ifndef cpu_icache_snoops_remote_store
 112 #ifdef CONFIG_SMP
 113 #define cpu_icache_snoops_remote_store  (cpu_data[0].icache.flags & MIPS_IC_SNOOPS_REMOTE)
 114 #else
 115 #define cpu_icache_snoops_remote_store  1
 116 #endif
 117 #endif
 118
 119 #ifndef cpu_has_dsp
 120 #define cpu_has_dsp             (cpu_data[0].ases & MIPS_ASE_DSP)
 121 #endif
 122
 123 #ifdef CONFIG_MIPS_MT
 124 #ifndef cpu_has_mipsmt
 125 # define cpu_has_mipsmt         (cpu_data[0].ases & MIPS_ASE_MIPSMT)
 126 #endif
 127 #else
 128 # define cpu_has_mipsmt         0
 129 #endif
 130
 131 #ifdef CONFIG_32BIT
 132 # ifndef cpu_has_nofpuex
 133 # define cpu_has_nofpuex        (cpu_data[0].options & MIPS_CPU_NOFPUEX)
 134 # endif
 135 # ifndef cpu_has_64bits
 136 # define cpu_has_64bits         (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 137 # endif
 138 # ifndef cpu_has_64bit_zero_reg
 139 # define cpu_has_64bit_zero_reg (cpu_data[0].isa_level & MIPS_CPU_ISA_64BIT)
 140 # endif
 141 # ifndef cpu_has_64bit_gp_regs
 142 # define cpu_has_64bit_gp_regs          0
 143 # endif
 144 # ifndef cpu_has_64bit_addresses
 145 # define cpu_has_64bit_addresses        0
 146 # endif
 147 #endif
 148
 149 #ifdef CONFIG_64BIT
 150 # ifndef cpu_has_nofpuex
 151 # define cpu_has_nofpuex                0
 152 # endif
 153 # ifndef cpu_has_64bits
 154 # define cpu_has_64bits                 1
 155 # endif
 156 # ifndef cpu_has_64bit_zero_reg
 157 # define cpu_has_64bit_zero_reg         1
 158 # endif
 159 # ifndef cpu_has_64bit_gp_regs
 160 # define cpu_has_64bit_gp_regs          1
 161 # endif
 162 # ifndef cpu_has_64bit_addresses
 163 # define cpu_has_64bit_addresses        1
 164 # endif
 165 #endif
 166
 167 #ifdef CONFIG_CPU_MIPSR2
 168 # if defined(CONFIG_CPU_MIPSR2_IRQ_VI) && !defined(cpu_has_vint)
 169 #  define cpu_has_vint          (cpu_data[0].options & MIPS_CPU_VINT)
 170 # else
 171 #  define cpu_has_vint                  0
 172 # endif
 173 # if defined(CONFIG_CPU_MIPSR2_IRQ_EI) && !defined(cpu_has_veic)
 174 #  define cpu_has_veic          (cpu_data[0].options & MIPS_CPU_VEIC)
 175 # else
 176 #  define cpu_has_veic                  0
 177 # endif
 178 #else
 179 # define cpu_has_vint                   0
 180 # define cpu_has_veic                   0
 181 #endif
 182
 183 #ifndef cpu_has_subset_pcaches
 184 #define cpu_has_subset_pcaches  (cpu_data[0].options & MIPS_CPU_SUBSET_CACHES)
 185 #endif
 186
 187 #ifndef cpu_dcache_line_size
 188 #define cpu_dcache_line_size()  current_cpu_data.dcache.linesz
 189 #endif
 190 #ifndef cpu_icache_line_size
 191 #define cpu_icache_line_size()  current_cpu_data.icache.linesz
 192 #endif
 193 #ifndef cpu_scache_line_size
 194 #define cpu_scache_line_size()  current_cpu_data.scache.linesz
 195 #endif
 196
 197 #endif /* __ASM_CPU_FEATURES_H */